function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, Alexandre O. & Boehs, Guisla', 1],
    ['Ashrafi, Hossein & Dehghani, Amir & Sari, Alireza', 1],
    ['Bruce, A. J.', 2],
    ['Li, Xinzheng & Cleva, Régis & Poupin, Joseph', 4],
    ['Mantelatto, Fernando L. & Al, Et', 1],
    ['Marin, Ivan & Sinelnikov, Sergey', 3],
    ['Marin, Ivan & Türkay, Michael', 1],
    ['Mendonça, Luana M. C. & Guimarães, Carmen R. P.', 1],
    ['Naderloo, Reza & Türkay, Michael', 2],
    ['Okuno, Junji', 1],
    ['Okuno, Junji & Chan, Tin-Yam', 2],
    ['Soledade, Guidomar O. & Fonseca, Mytalle S.', 1],
    ['Vieira, Rony R. R. & Ferreira, Rodrigo S. & D’Incao, Fernando', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);